North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: totd
> The biggest problem with using non-routable ip addresses on numbered interfaces > whether point to point or frame or atm or whatever, is that you lose outside > connectivity from those interfaces. We tried this, but the essential > traceroutes from our core routes are too important when debugging BGP > problems to the outside. > > Robert Bowman > Exodus Communications Inc. Exactly. Especially when you have downstream customers who only announce routes via BGP to you and/or other providers, it can be important for them to be able to trace out with a source address that has global connectivity. We usually use unnumbered interfaces, though, for singly-connected customers (unless their routers can't support unnumbered interfaces). The only major gotcha with that is that if they're using a Real Router (that deleted routes associated with interfaces that aren't available), you can't get to their router if their ethernet is down... Avi - - - - - - - - - - - - - - - - -
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